build method

@override Widget build(BuildContext context)

Describes the part of the user interface represented by this widget.

The framework calls this method when this widget is inserted into the tree in a given BuildContext and when the dependencies of this widget change (e.g., an InheritedWidget referenced by this widget changes). This method can potentially be called in every frame and should not have any side effects beyond building a widget.

The framework replaces the subtree below this widget with the widget returned by this method, either by updating the existing subtree or by removing the subtree and inflating a new subtree, depending on whether the widget returned by this method can update the root of the existing subtree, as determined by calling Widget.canUpdate.

Typically implementations return a newly created constellation of widgets that are configured with information from this widget's constructor and from the given BuildContext.

The given BuildContext contains information about the location in the tree at which this widget is being built. For example, the context provides the set of inherited widgets for this location in the tree. A given widget might be built with multiple different BuildContext arguments over time if the widget is moved around the tree or if the widget is inserted into the tree in multiple places at once.

The implementation of this method must only depend on:

• the fields of the widget, which themselves must not change over time, and
• any ambient state obtained from the context using BuildContext.dependOnInheritedWidgetOfExactType.

If a widget's build method is to depend on anything else, use a StatefulWidget instead.

See also:

• StatelessWidget, which contains the discussion on performance considerations.

Implementation

@override
widgets.Widget build(widgets.BuildContext context) => SvgPicture.string(
      '''
<svg width="24" height="24" stroke-width="1.5" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M20 17.6073C21.4937 17.0221 23 15.6889 23 13C23 9 19.6667 8 18 8C18 6 18 2 12 2C6 2 6 6 6 8C4.33333 8 1 9 1 13C1 15.6889 2.50628 17.0221 4 17.6073" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M7.58059 19.4874L9.34836 21.2552C10.9105 22.8173 13.4431 22.8173 15.0052 21.2552L15.3588 20.9016" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M7.93413 21.9623L7.58058 19.4874L10.0554 19.841L7.93413 21.9623Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M16.2981 16.9016L14.5303 15.1339C12.9682 13.5718 10.4355 13.5718 8.87345 15.1339L8.51989 15.4874" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M15.9445 14.4268L16.2981 16.9017L13.8232 16.5481L15.9445 14.4268Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );